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Diesel Vehicle Control

A page number:632-794-301

Last updated date:2018/2/9

Measures against Diesel Emissions
Since 2003, the Tokyo Metropolitan Government (TMG) has been regulating exhaust gas from diesel vehicles in accordance with ordinances. Diesel vehicles subject to the regulation include large vehicles, such as trucks and buses, except passenger vehicles.

Since the beginning of the regulation, those diesel vehicles that do not meet the particulate matter (PM) emission standards stipulated by the ordinances have not been allowed to drive in the Metropolitan area. These diesel vehicles must be replaced with low-emission vehicles or equipped with PM reduction devices in order to satisfy the regulation.

To start the regulation, TMG strongly urged auto manufacturers to develop PM reduction devices and the oil industry to supply low-sulfur light oil while consolidation crackdown systems and providing financial support to users.

As a result, the air environment in Tokyo has drastically improved since 2004 in terms of suspended particular matter (SPM).


Achievement rated for the environmental standards


Transition of annual average concentrations of SPM

Enforcement of diesel regulations
To ensure effective enforcement of diesel regulations, a team of automobile pollution inspectors, mainly former police officers, are dispatched to identify vehicles in violation. Enforcement by the team includes inspections of vehicles on the street and at distribution centers, and the use of video cameras to record vehicles driving in Tokyo. Violators will be subject to an order prohibiting operation of the vehicle. In the case of a repeated offense, a fine is imposed.

Reducing environmental load of business vehicles
In addition to a crackdown against non-compliant diesel vehicles, TMG is now working on the support of shift to hybrid buses and trucks, etc. We also require businesses with 30 or more vehicles (approximately 1,700 businesses at the end of FY2015) to submit a Vehicle Emission Reduction Plan for further reductions in greenhouse gases and exhaust gases caused by vehicles.
Through the Vehicle Emission Reduction Program, 1.43 million tonnes of CO2 was reduced in the five years from FY2011 to FY2015 (third compliance period) by encouraging a shift to low-emission/fuel-efficient automobiles, such as hybrid vehicles, making efforts for eco-driving, etc. (the value is a total of approximately 1,500 businesses submitting their reports for the five consecutive years).

Overview of Vehicle Emission Reduction Program
Applicable businesses Those that have businesses in Tokyo and use 30 or more vehicles
Compliance period Five years from FY2016to FY2020 (fourth compliance period)
Obligations Submission of Vehicle Emission Reduction Plan and annual performance report
Main contents of the Plan >Setting reduction targets for GHG and exhaust gas from vehicles
> Eff orts to introduce specified low-emission vehicles and fuel-efficient vehicles
> Efforts for eco-dnv1ng
> Efforts to use vehicles more intelligently

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